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The ADP5065 operates from a 4 V to 5.5 V input voltage range but is tolerant of voltages of up to 20 V. This alleviates the concerns about the USB bus spiking during disconnect or connect scenarios.

The ADP5065 also features an internal FET between the dc-to-dc charger output and the battery. This permits battery isolation and, hence, system powering under a dead battery or no battery scenario, which allows for immediate system function on connection to a USB power supply.

Based on the type of USB source, which is detected by an external USB detection chip, the ADP5065 can be set to apply the correct current limit for optimal charging and USB compliance.

The ADP5065 comes in a very small and low profile 20-lead WLCSP (0.5 mm pitch spacing) package.

The overall solution requires only five small, low profile external components consisting of four ceramic capacitors (one of which is the battery filter capacitor), one multilayer inductor. In addition to these components, there is one optional dead battery situation default setting resistor. This configuration enables a very small PCB area to provide an integrated and performance enhancing solution to USB battery charging and power rail provision.

Evaluation Kits (1)

EVAL-ADP5065

The ADP5065 charger evaluation system is composed of an evaluation board and an USB-to-IIC converter dongle. All evaluation board functions and circuits are controlled via one I2C bus connector. The I2C bus interfaces to the ADP5065 directly, and the digital input/output signals are controlled through an on-board input/output expander circuit for the I2C bus. The evaluation board also features a 3.4 V regulator for VDDIO generation. The board contains jumpers and numerous test points for easy evaluation.

Full performance details are provided in the ADP5065 data sheet, which is available at www.analog.com. The ADP5065 data sheet should be consulted in conjunction with this user guide.

Features & Benefits

Input voltage of 4.0 V to 5.5 V

High current terminals for ADP5065 power connection (VINx), system voltage (ISO_Sx), and battery voltage (ISO_Bx) pins

Circuit Notes (1)

Technical Articles (1)

Design Resources

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars
(FOB USA per unit for the stated volume), and is subject to change. International
prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific
price or delivery quotes, please contact your local Analog Devices, Inc. sales office
or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based
on 1-piece pricing.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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